Technical note: A novel geometric morphometric approach to the study of long bone shape variation

Melanie A. Frelat (Corresponding author), Stanislav Katina, Gerhard Weber, Fred Bookstein

Publications: Contribution to journalArticlePeer Reviewed

Abstract

Procrustes-based geometric morphometrics (GM) is most often applied to problems of craniofacial shape variation. Here, we demonstrate a novel application of GM to the analysis of whole postcranial elements in a study of 77 hominoid tibiae. We focus on two novel methodological improvements to standard GM approaches: 1) landmark configurations of tibiae including 15 epiphyseal landmarks and 483 semilandmarks along articular surfaces and muscle insertions along the tibial shaft and 2) an artificial affine transformation that sets moments along the shaft equal to the sum of the moments estimated in the other two anatomical directions. Diagrams of the principal components of tibial shapes support most differences between human and non-human primates reported previously. The artificial affine transformation proposed here results in an improved clustering of the great apes that may prove useful in future discriminant or clustering studies. Since the shape variations observed may be related to different locomotor behaviors, posture, or activity patterns, we suggest that this method be used in functional analyses of tibiae or other long bones in modern populations or fossil specimens.
Original languageEnglish
Pages (from-to)628-638
Number of pages11
JournalAmerican Journal of Physical Anthropology
Volume149
Issue number4
DOIs
Publication statusPublished - 2012

Austrian Fields of Science 2012

  • 1060 Biology

Fingerprint

Dive into the research topics of 'Technical note: A novel geometric morphometric approach to the study of long bone shape variation'. Together they form a unique fingerprint.

Cite this